globalchange  > 气候变化与战略
DOI: 10.1016/j.atmosenv.2020.117520
论文题名:
Three-dimensional velocity and concentration measurements and simulations of a scaled Jack Rabbit II mock urban array
作者: Owkes M.; Benson M.; Elkins C.; Wilde N.; Van Poppel B.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 233
语种: 英语
英文关键词: Large dataset ; Large eddy simulation ; Magnetism ; Uncertainty analysis ; Velocity ; Concentration fields ; Concentration Measurement ; Large-scale field tests ; Measurement uncertainty ; Three dimensional flow field ; Three-dimensional measurements ; Three-dimensional velocity ; Wealth of information ; Magnetic resonance ; concentration (composition) ; data set ; nuclear magnetic resonance ; numerical model ; simulation ; three-dimensional modeling ; uncertainty analysis ; animal experiment ; animal model ; article ; controlled study ; field study ; Leporidae ; nonhuman ; nuclear magnetic resonance ; phase 1 clinical trial ; simulation ; uncertainty ; velocity ; Lepus
学科: Contaminant dispersion ; Large eddy simulation ; Magnetic resonance concentration
中文摘要: Magnetic resonance (MR) techniques provide non-invasive, three-dimensional measurements of velocity and concentration fields. Applying MR techniques to measure flows of contaminants through urban arrays provides a wealth of information that is difficult to obtain with large-scale field tests. In this project, a 1:188 scaled model of the phase 1 Jack Rabbit II field test was replicated and studied using a water tunnel with properties chosen to mimic field conditions. Three-dimensional, time-averaged flow data was measured using magnetic resonance velocimetry (MRV) and magnetic resonance concentration (MRC) techniques. The scaled flow was also modeled with large-eddy simulations (LES) to provide a dataset for comparison with the MR based measurements. Despite a complex, three-dimensional flow field, both velocity and concentration show good agreement between the experimental measurements and simulation data. Measurement uncertainty was estimated to be ±5% of each of the measured velocity components at each location for MRV and ±4% of the measured concentration at each location for MRC. © 2020 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160298
Appears in Collections:气候变化与战略

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作者单位: Montana State University, Department of Mechanical and Industrial Engineering, Bozeman, MT, United States; United States Military Academy, Department of Civil and Mechanical Engineering, West Point, NY, United States; Stanford University, Department of Mechanical Engineering, Stanford, CA, United States; Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, Cambridge, MA, United States

Recommended Citation:
Owkes M.,Benson M.,Elkins C.,et al. Three-dimensional velocity and concentration measurements and simulations of a scaled Jack Rabbit II mock urban array[J]. Atmospheric Environment,2020-01-01,233
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